Featured Research

from universities, journals, and other organizations

World's First X-ray Free Electron Laser Is On Course To Completion

Date:
July 2, 2007
Source:
DOE/Argonne National Laboratory
Summary:
Argonne reached another milestone in the design and construction of the Linac Coherent Light Source undulator system.

Isaac Vasserman (left) and Matt Kasa of Argonne's Accelerator Systems Division prepare an undulator for magnetic tuning and verification.
Credit: Image courtesy of DOE/Argonne National Laboratory

Argonne reached another milestone in the design and construction of the Linac Coherent Light Source (LCLS) undulator system.

LCLS will be the world's first X-ray free electron laser to produce hard X-rays when it becomes operational at the Stanford Linear Accelerator Center (SLAC) in 2009. It will be the first X-ray laser to combine the brilliance of laser sources with the penetrating power and atomic sensitivity of X-rays. Argonne is a partner laboratory on the project and is responsible for the 130-meter undulator system, including magnets, support structures, beam diagnostics, controls and vacuum systems.

Undulators are the heart of the LCLS free electron laser, providing a precise magnetic field through which an electron beam will travel. The undulators' magnetic fields force the electrons to oscillate back and forth and produce large amounts of X-rays. These X-rays interact back on the electrons and force them to bunch at X-ray wavelengths. When this occurs, the electrons emit their light coherently, causing a large gain in radiation power that raises the X-rays' intensity.

“Argonne was tapped to participate in this project due to the expertise demonstrated with the Advanced Photon Source undulator systems,” said J. Murray Gibson, associate laboratory director of Argonne's Scientific User Facilities. “An X-ray laser such as LCLS will open up new scientific frontiers and represents an immense technical achievement for the United States. We could not have done this withoutthe partnership of national laboratories, universities and industry.”

“The last of the 40 LCLS undulators was assembled and accepted by Argonne late last month, on time and within budget, from Hi-Tech Manufacturing in Illinois and Metalex Manufacturing in Ohio,” said Argonne LCLS Project Director Geoff Pile. “The LCLS project remains on course for completion in March 2009.”

“This is the first time such ultra-precise undulators were mass-produced in America by non-specialized small businesses,” said Emil Trakhtenberg, Argonne senior mechanical engineer at APS.

Each undulator comprises a precision-tuned array of ultra-strong neodymium-iron-boron permanent magnets and vanadium permendur magnetic poles. The magnets and poles are mounted in aluminum structures bolted into a 3.4-meter-long titanium strongback. The strongback secures the magnet and pole assemblies, counteracts the very high magnetic forces between the upper and lower magnetic arrays, and is critical in determining the thermal and mechanical stability of the undulator. Precision and stability requirements for the LCLS devices far exceed those for existing undulators at the Advanced Photon Source and other light-source facilities.

The pulses of X-ray laser light from LCLS, a fourth-generation light-source, will be shorter and a billion times brighter than can be produced by any other X-ray source available now or in the near future.

“These advanced characteristics will aid scientists in discovering and probing new states of matter, understanding and following chemical reactions and biological processes in real time, imaging chemical and structural properties of materials on the nanoscale, and many new and exciting discoveries we cannot even imagine today,” said Marion White, senior physicist at APS. “The LCLS will enable revolutionary new science.”

The LCLS project is funded by the U.S. Department of Energy and is being constructed by a partnership of three national laboratories: SLAC, Argonne and Lawrence Livermore National Laboratory.


Story Source:

The above story is based on materials provided by DOE/Argonne National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

DOE/Argonne National Laboratory. "World's First X-ray Free Electron Laser Is On Course To Completion." ScienceDaily. ScienceDaily, 2 July 2007. <www.sciencedaily.com/releases/2007/06/070628071604.htm>.
DOE/Argonne National Laboratory. (2007, July 2). World's First X-ray Free Electron Laser Is On Course To Completion. ScienceDaily. Retrieved April 19, 2014 from www.sciencedaily.com/releases/2007/06/070628071604.htm
DOE/Argonne National Laboratory. "World's First X-ray Free Electron Laser Is On Course To Completion." ScienceDaily. www.sciencedaily.com/releases/2007/06/070628071604.htm (accessed April 19, 2014).

Share This



More Health & Medicine News

Saturday, April 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

'Holy Grail' Of Weight Loss? New Find Could Be It

'Holy Grail' Of Weight Loss? New Find Could Be It

Newsy (Apr. 18, 2014) In a potential breakthrough for future obesity treatments, scientists have used MRI scans to pinpoint brown fat in a living adult for the first time. Video provided by Newsy
Powered by NewsLook.com
Little Progress Made In Fighting Food Poisoning, CDC Says

Little Progress Made In Fighting Food Poisoning, CDC Says

Newsy (Apr. 18, 2014) A new report shows rates of two foodborne infections increased in the U.S. in recent years, while salmonella actually dropped 9 percent. Video provided by Newsy
Powered by NewsLook.com
Scientists Create Stem Cells From Adult Skin Cells

Scientists Create Stem Cells From Adult Skin Cells

Newsy (Apr. 17, 2014) The breakthrough could mean a cure for some serious diseases and even the possibility of human cloning, but it's all still a way off. Video provided by Newsy
Powered by NewsLook.com
Obama: 8 Million Healthcare Signups

Obama: 8 Million Healthcare Signups

AP (Apr. 17, 2014) President Barack Obama gave a briefing Thursday announcing 8 million people have signed up under the Affordable Care Act. He blasted continued Republican efforts to repeal the law. (April 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins